While none of this has been tested and numbers are subject to change, an update to the Plasma and Explosive Mods has just been done. Plasma has received a rework that will hopefully make it more relevant and cool.

Plasma: When you attack with a plasma weapon, you may vent excess heat to automatically deal 1 Harm to an enemy in range of your weapon.

Explosive on the other hand has been nerfed. In my tests it has proven to be too effective with spray and cone weapons in general. So it has received the following tweak so that focusing close together targets is still effective, but not so devastating to people just standing by.

Explosive: If the weapon has the AoE tag increase AoE to Mid. On non AoE weapons deal 1 Harm to enemies close to your target.

Also, in terms of ranges Near is now Mid due to confusion about close vs near amongst my play-testers.